Re: v$sql_plan object_node strange results
- From: Luis <lcarapinha@xxxxxxxxx>
- To: brian.s.wisniewski@xxxxxxxxxxxx
- Date: Fri, 8 Mar 2013 17:15:13 +0000
Hi Brian,
If you go to description here:
http://docs.oracle.com/cd/B19306_01/server.102/b14237/dynviews_2120.htm
"Name of the database link used to reference the object (a table name or
view name). For local queries that use parallel execution, this column
describes the order in which output from operations is consumed."
Resumed:
1) remote query: name of database link
2) local with parallel: order of output
3) local with no parallel: null?
Thanks,
Luis
On Fri, Mar 8, 2013 at 5:05 PM, Wisniewski, Brian S <
brian.s.wisniewski@xxxxxxxxxxxx> wrote:
> 11.1.0.7 or 11.2.0.2 database
> I don't understand why the object_node changes from v$sql_plan when you're
> selecting against the view remotely or locally. Can anyone shed light on
> this?
>
> I have to write more logic to account for this now because that I
> understand what it's doing but it was quite maddening for a while getting
> different results.
>
> When selecting locally object_node is null:
>
> 11.1.0.7
>
> SQL> select object_name,object_node, sql_id from v$sql_plan where sql_id
> = '9u0hx34qg80uv' and object_name is not null;
>
> OBJECT_NAME OBJECT_NODE
> SQL_ID
> ------------------------------ ----------------------------------------
> -------------
> TBL_ADVDB_APPEAL
> 9u0hx34qg80uv
> TBL_ADVDB_ASSIGN_STATUS
> 9u0hx34qg80uv
> TBL_ADVDB_BLOCK_TYPE
> 9u0hx34qg80uv
>
> 11.2
>
> select object_name, object_node, sql_id from v$sql_plan where sql_id >
> 'gzxjptnb43n1k' and object_name is not null;
>
> OBJECT_NAME OBJECT_NODE
> SQL_ID
> ------------------------------ ----------------------------------------
> -------------
> ADW_AUCTION_DETAIL
> gzxjptnb43n1k
>
>
> When selecting against the same database across a database link
> OBJECT_NODE gets populated with the instance_name
>
> 11.1.0.7
>
> SQL> select object_name,object_node, sql_id from v$sql_plan@busdev where
> sql_id = '9u0hx34qg80uv' and object_name is not null;
>
> OBJECT_NAME OBJECT_NODE
> SQL_ID
> ------------------------------ ----------------------------------------
> -------------
> TBL_ADVDB_APPEAL RISK
> 9u0hx34qg80uv
> TBL_ADVDB_ASSIGN_STATUS RISK
> 9u0hx34qg80uv
> TBL_ADVDB_BLOCK_TYPE RISK
> 9u0hx34qg80uv
>
> 11.2
>
> select object_name, object_node, sql_id from v$sql_plan@busg05d where
> sql_id = 'gzxjptnb43n1k' and object_name is not null;
>
> OBJECT_NAME OBJECT_NODE
> SQL_ID
> ------------------------------ ----------------------------------------
> -------------
> ADW_AUCTION_DETAIL BUSG05D
> gzxjptnb43n1k
>
>
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--
Cumprimentos,
Luís Marques
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